I know the one time I think I was most in love, I fell in love with someone I thought only of as a friend at first.
That was my experience also. Personally, I would prefer to be friends first. But everyone is different. And every situation is different. You can ruin a friendship and possible relationship by acting to fast. Or you can miss your golden opportunity by waiting too long to let your feelings be known. I don't think there are any hard and fast rules. Pray about it then go with your gut feelings in the situation.